<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar class="page-nav-bar" title="登录" />
    <!-- 导航栏 -->

    <!-- 登录表单 -->
    <van-form @submit="onSubmit" ref="loginForm">
      <van-field
        v-model="user.mobile"
        name="mobile"
        placeholder="请输入手机号"
        :rules="userFormRules.mobile"
        type="number"
        maxlength="11"
      >
        <i slot="left-icon" class="toutiao toutiao-shouji"></i>
      </van-field>

      <van-field
        v-model="user.code"
        name="code"
        placeholder="请输入验证码"
        :rules="userFormRules.code"
        type="password"
        maxlength="6"
      >
        <i slot="left-icon" class="toutiao toutiao-yanzhengma"></i>

        <template #button>
          <!-- 倒计时 -->
          <van-count-down
            v-if="isCountDownShow"
            :time="1000 * 5"
            format="ss s"
            @finish="isCountDownShow = false"
          />
          <!-- 倒计时结束时 将isCountDownShow重置隐藏 -->

          <!-- 发送验证码按钮 -->
          <van-button
            v-else
            native-type="button"
            class="send-sms-btn"
            size="small"
            type="primary"
            @click="onSendSms"
            round
            >发送验证码</van-button
          >
        </template>
      </van-field>
      <div class="login-btn-wrap" style="margin: 16px">
        <van-button class="login-btn" block type="info" native-type="submit"
          >提交</van-button
        >
        <!-- 发送验证码按钮 -->
      </div>
    </van-form>
    <!-- 登录表单 -->
  </div>
</template>

<script>
// 导入请求模块
import { login } from '@/api/user'

export default {
  name: 'LoginIndex',
  components: {},
  props: {},
  data () {
    return {
      user: {
        mobile: '13911223344',
        code: '246810'
      },
      userFormRules: {
        // userFormRoules方法
        mobile: [
          {
            required: true, // 必填项
            message: '手机号不能为空' // 提示信息
          },
          {
            pattern: /^1[3|5|7|8|9]\d{9}$/, // 正则表达式
            message: '手机号格式错误' // 提示信息
          }
        ],
        code: [
          {
            required: true, // 必填项
            message: '验证码不能为空' // 提示信息
          },
          {
            pattern: /^\d{6}$/, // 正则表达式  六位数验证码
            message: '验证码格式错误' // 提示信息
          }
        ]
      },
      isCountDownShow: false // 控制倒计时的显示和隐藏
    }
  },
  computed: {},
  watch: {},
  created () {},
  mounted () {},
  methods: {
    // 表单提交事件
    async onSubmit (values) {
      console.log('submit', values)
      //   1.获取表单数据
      const user = this.user

      // 2.表单验证
      this.$toast.loading({
        message: '登录中...',
        forbidclick: true, // 禁止背景点击
        duration: 0 // 持续时间，默认2000,0表示不关闭
      })
      // 3.提交表单请求登录
      try {
        const res = await login(user)
        this.$store.commit('setUser', res.data.data)
        this.$toast.success('登录成功')
        this.$router.back()
        console.log(res)
      } catch (err) {
        if (err.response && err.response.status === 400) {
          this.$toast.fail('手机号或验证码错误')
        } else {
          this.$toast.fail('登录失败，请稍后重试')
        }
      }
      // 4.根据请求响应结果处理后续操作
    },
    // 验证手机验证码
    async onSendSms () {
      // 1.效验手机号
      try {
        await this.$refs.loginForm.validate('mobile')
        // this.$refs.loginForm.validata()获取表单from上的res属性
      } catch (err) {
        return console.log(err)
      }
      // 2.验证通过，显示倒计时
      this.isCountDownShow = true

      //   3.请求发送验证码
    }
  }
}
</script>

<style scoped lang="less">
.login-container {
  .toutiao {
    font-size: 37px;
  }
  .send-sms-btn {
    // width: 152px;
    height: 46px;
    line-height: 46px;
    background-color: #ededed;
    font-size: 22px;
    color: #666;
  }
  .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
}

/deep/ .van-button--primary {
  border-color: #1989fa !important;
}
</style>
